Search a number
-
+
230758261 is a prime number
BaseRepresentation
bin11011100000100…
…01011101110101
3121002012201211021
431300101131311
5433033231021
634521541141
75501261416
oct1560213565
9532181737
10230758261
11109291108
12653447b1
1338a66466
142290b80d
15153d2c41
hexdc11775

230758261 has 2 divisors, whose sum is σ = 230758262. Its totient is φ = 230758260.

The previous prime is 230758259. The next prime is 230758271. The reversal of 230758261 is 162857032.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 207187236 + 23571025 = 14394^2 + 4855^2 .

It is a cyclic number.

It is not a de Polignac number, because 230758261 - 21 = 230758259 is a prime.

Together with 230758259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230758201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115379130 + 115379131.

It is an arithmetic number, because the mean of its divisors is an integer number (115379131).

Almost surely, 2230758261 is an apocalyptic number.

It is an amenable number.

230758261 is a deficient number, since it is larger than the sum of its proper divisors (1).

230758261 is an equidigital number, since it uses as much as digits as its factorization.

230758261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 230758261 is about 15190.7294426568. The cubic root of 230758261 is about 613.3651345817.

It can be divided in two parts, 23075 and 8261, that multiplied together give a triangular number (190622575 = T19525).

The spelling of 230758261 in words is "two hundred thirty million, seven hundred fifty-eight thousand, two hundred sixty-one".